Patents by Inventor Akira Sakai
Akira Sakai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10148942Abstract: A mirror display system that enables simultaneous perception of a mirror image and a video image with suppressed uncomfortable feeling includes a half mirror plate including a half mirror layer; a 3D display device; and a control unit being configured to supply a video signal to the 3D display device. The 3D display device is disposed on the back surface side of the half mirror plate and is configured to display, by the video signal, a video image for the left eye and a video image for the right eye that give a parallax on a display surface of the 3D display device. The parallax is set such that a fused video image of the video image for the left eye and the video image for the right eye is perceived on the back surface side behind the display surface of the 3D display device.Type: GrantFiled: June 3, 2015Date of Patent: December 4, 2018Assignee: Sharp Kabushiki KaishaInventors: Akira Sakai, Masahiro Hasegawa, Hiroyuki Hakoi, Kiyoshi Minoura
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Patent number: 10146093Abstract: The present invention provides a mirror display that exhibits non-deteriorated display quality in a display mode and is capable of adjusting the color of reflected light in a mirror mode.Type: GrantFiled: February 15, 2016Date of Patent: December 4, 2018Assignee: SHARP KABUSHIKI KAISHAInventors: Akira Sakai, Hiroyuki Hakoi, Masahiro Hasegawa, Kiyoshi Minoura
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Patent number: 10146086Abstract: The present invention provides a mirror display that sufficiently prevents a decrease in the screen luminance in the display mode while sufficiently increasing the reflectance in the mirror mode, and also gives excellent production efficiency.Type: GrantFiled: July 24, 2014Date of Patent: December 4, 2018Assignee: SHARP KABUSHIKI KAISHAInventors: Akira Sakai, Masahiro Hasegawa, Hiroyuki Hakoi, Hidefumi Yoshida, Shigeaki Mizushima
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Publication number: 20180321546Abstract: The switching mirror panel of the present invention includes, in the following order: a reflective polarizing plate; a liquid crystal panel including paired facing substrates, and a liquid crystal layer and a sealing material disposed between the paired substrates; and an absorptive polarizing plate, wherein the switching mirror panel is capable of switching between a transparent mode and a mirror mode, where the transparent mode allows light to pass from the viewing surface side of the absorptive polarizing plate to the back surface side of the reflective polarizing plate and the mirror mode does not allow light to pass from the viewing surface side of the absorptive polarizing plate to the back surface side of the reflective polarizing plate, the sealing material transmits light incident from the normal direction of the absorptive polarizing plate, and the sealing material has a haze of 0% or higher and 10% or lower.Type: ApplicationFiled: October 24, 2016Publication date: November 8, 2018Inventors: AKIRA SAKAI, HIROYUKI HAKOI, KIYOSHI MINOURA
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Publication number: 20180314109Abstract: Provided is a liquid crystal display panel (100C) including a transverse electric field mode liquid crystal cell (10), a first polarizing plate (22C) disposed on a back surface side of the liquid crystal cell (10), and a second polarizing plate (24C) disposed on an observer side of the liquid crystal cell (10), wherein: letting ?n be birefringence of nematic liquid crystals and d be a thickness of the liquid crystal layer for a liquid crystal layer (18), ?nd is less than 550 nm, the liquid crystal layer is in a twisted alignment state when no voltage is applied, and when polarized light for which the absolute value |S3| of the Stokes parameter S3 is 1.00 is incident, the |S3| of the polarized light transmitted through the liquid crystal layer (18) is greater than or equal to 0.85; and the first polarizing plate (22C) and the second polarizing plate (24C) are circular polarizing plates or elliptical polarizing plates having an ellipticity of 0.Type: ApplicationFiled: June 17, 2016Publication date: November 1, 2018Inventors: Akira SAKAI, Kohzoh NAKAMURA, Masahiro HASEGAWA, Takako KOIDE, Kiyoshi MINOURA
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Patent number: 10054818Abstract: The present invention provides a mirror plate capable of suppressing the occurrence of orange peel-like unevenness. The mirror plate includes a mirror film including a mirror layer and an adhesive layer; and a substrate. The adhesive layer is attached to one surface of the substrate. The one surface of the substrate has an arithmetic average roughness of less than 0.03 ?m. The mirror film includes no hard coat layer containing cured resin. The thicknesses of the mirror layer and the adhesive layer have a relation satisfying: tA/tM?0.18, where tM represents the thickness of the mirror layer and to represents the thickness of the adhesive layer.Type: GrantFiled: July 1, 2015Date of Patent: August 21, 2018Assignee: Sharp Kabushiki KaishaInventors: Akira Sakai, Masahiro Hasegawa, Hiroyuki Hakoi, Kiyoshi Minoura
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Publication number: 20180231844Abstract: A liquid crystal display panel (100A) includes a first polarizing plate (22) and a first phase difference plate (32a) disposed on an observer side, and a second polarizing plate (24) and a second phase difference plate (34a) disposed on a back surface side. ?nd of a liquid crystal layer having a homogeneous alignment when no electrical field is applied is 360 nm or greater and 490 nm or less, and an in-plane retardation R1 of the first phase difference plate is 100 nm or greater and 160 nm or less. A thickness direction retardation of at least one of the first and second phase difference plates has a negative value. The slow axes of the first and second phase difference plates are substantially parallel to each other and substantially orthogonal to an azimuthal direction of the liquid crystal director.Type: ApplicationFiled: July 28, 2016Publication date: August 16, 2018Inventors: AKIRA SAKAI, KOHZOH NAKAMURA, MASAHIRO HASEGAWA, TAKAKO KOIDE, KIYOSHI MINOURA
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Publication number: 20180225398Abstract: A method for calculating heat density including: executing first simulation of calculating a temperature of each of temperature cells of temperature plane associated one-to-one with each of heat generation cells of heat generation plane with a heat density of heat generation cell set at a first heat density, and storing first temperature information; executing a second simulation of calculating a temperature of the temperature plane when the heat density is set to a second heat density obtained by adding a fixed value to each first heat density and storing second temperature information; calculating a change coefficient indicating a change amount of the temperature with respect to a change amount of the heat density for each of the heat generation cells; determining a heat density of each heat generation cells based on the change coefficients so that the temperature of each of temperature cells reaches a desired target temperature.Type: ApplicationFiled: February 2, 2018Publication date: August 9, 2018Applicant: FUJITSU LIMITEDInventor: Akira Sakai
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Patent number: 10042201Abstract: The present invention provides a liquid crystal display device having a high transmittance and excellent visibility in a bright place. The liquid crystal display device of the present invention includes, in the given order, a backlight, a first circular polarizer, a liquid crystal panel, and a second circular polarizer. The first circular polarizer is a reflective circular polarizer including a reflective linear polarizer and a ?/4 plate disposed adjacent to the reflective linear polarizer. The liquid crystal display device satisfies (1) the liquid crystal panel is provided with color filters of two or more colors and has an aperture ratio lower than 43%, or (2) the liquid crystal panel is provided with no color filter and has an aperture ratio of 39% or lower.Type: GrantFiled: November 26, 2015Date of Patent: August 7, 2018Assignee: SHARP KABUSHIKI KAISHAInventors: Akira Sakai, Hiroyuki Hakoi, Kozo Nakamura, Kiyoshi Minoura
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Patent number: 10012866Abstract: The present invention provides a mirror display that can match the peripheral environment having diffusely reflecting surfaces in the mirror mode, and an electronic device including the mirror display. The mirror display includes a half mirror plate that includes a reflective polarizer and a display device. The half mirror plate further includes a light-diffusing member that diffuses at least part of incident light. The mirror display includes, in the order from the back surface side, the display device, the reflective polarizer, and the light-diffusing member.Type: GrantFiled: February 17, 2015Date of Patent: July 3, 2018Assignee: SHARP KABUSHIKI KAISHAInventors: Akira Sakai, Masahiro Hasegawa, Hiroyuki Hakoi, Kiyoshi Minoura, Shigeaki Mizushima
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Patent number: 9971193Abstract: A liquid crystal display panel (100A, 100B) includes a transverse electric field mode liquid crystal cell (10), a first polarizing plate (22A, 22B) disposed on a back surface side of the liquid crystal cell (10), and a second polarizing plate (24A, 24B) disposed on a viewer's side of the liquid crystal cell (10). A liquid crystal layer (18) contains a nematic liquid crystal whose dielectric anisotropy is negative. The liquid crystal layer (18) has ?nd of less than 550 nm, where ?n is the birefringent index of the nematic liquid crystal and d is the thickness of the liquid crystal layer. The liquid crystal layer (18) is in a twist alignment state when no voltage is applied. When polarized light whose Stokes parameter S3 takes on an absolute value |S3| of 1.00 enters the liquid crystal layer (18), |S3| of polarized light having perpendicularly passed through the liquid crystal layer (18) is 0.85 or greater.Type: GrantFiled: September 2, 2015Date of Patent: May 15, 2018Assignee: Sharp Kabushiki KaishaInventors: Kohzoh Nakamura, Akira Sakai, Kiyoshi Minoura
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Publication number: 20180052346Abstract: The present invention provides a mirror display that exhibits non-deteriorated display quality in a display mode and is capable of adjusting the color of reflected light in a mirror mode.Type: ApplicationFiled: February 15, 2016Publication date: February 22, 2018Inventors: AKIRA SAKAI, HIROYUKI HAKOI, MASAHIRO HASEGAWA, KIYOSHI MINOURA
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Publication number: 20180052351Abstract: A liquid crystal display panel (100) according to an embodiment includes: a first polarizer (22) and a first phase plate (32) on the viewer's side; and a second polarizer (24) and a second phase plate (34) on the rear face side. A liquid crystal layer, which takes a homogeneous alignment in the absence of an applied electric field, has a ?nd of not less than 360 nm and not more than 490 nm; a retardation R1 of the first phase plate is not less than 100 nm and not more than 160 nm; and a retardation R2 of the second phase plate is not less than 200 nm and not more than 360 nm. The slow axes of the first and second phase plates are substantially parallel to each other and substantially orthogonal to the azimuth direction of the director of the liquid crystal.Type: ApplicationFiled: March 11, 2016Publication date: February 22, 2018Inventors: KOHZOH NAKAMURA, KIYOSHI MINOURA, AKIRA SAKAI
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Publication number: 20170336950Abstract: A non-transitory computer-readable recording medium has stored therein a program for causing a computer to execute a process for displaying a characteristic, the process includes displaying, on a display, a main screen indicating a first characteristic in a first area of an object to be analyzed; and displaying, on the display, a sub-screen indicating a second characteristic in a second area in the object, the second characteristic being different from the first characteristic, the second area being specified within the main screen, the sub-screen being overlapped on a portion within the main screen, the portion being corresponding to a portion of the second area in the first area.Type: ApplicationFiled: May 1, 2017Publication date: November 23, 2017Applicant: FUJITSU LIMITEDInventors: Takamasa Shinde, Akira Sakai, Akihiro Otsuka, Kazuhisa Inagaki, Hideharu Matsushita, Akira Ueda, Tetsuyuki Kubota, Yasuhiro Ite
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Publication number: 20170329169Abstract: The present invention provides a mirror display that can be enlarged without quality deterioration. The mirror display includes, in the order from a viewing surface side, a half mirror plate including a reflective polarizer, a polarization conversion layer, and a display device including an absorptive polarizer on a side of the polarization conversion layer. The reflective polarizer includes a transmission axis parallel to the longitudinal direction of the display device and is jointless. The absorptive polarizer includes a transmission axis perpendicular to the longitudinal direction of the display device and is jointless. The polarization conversion layer is configured to convert the polarization of polarized light passed through the absorptive polarizer.Type: ApplicationFiled: October 22, 2015Publication date: November 16, 2017Inventors: Akira SAKAI, Hiroyuki HAKOI, Masahiro HASEGAWA, Kiyoshi MINOURA
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Publication number: 20170285382Abstract: One aspect of the present invention provides a touch panel-equipped mirror display that can reduce distortion and ghosting in mirror images while also reducing the rainbow effect in displayed images. The touch panel-equipped mirror display according to one aspect of the present invention includes, in order from a rear side: a display device that includes a polarizer; a touch panel; and a mirror plate that includes a reflective polarizer and a substrate, wherein the reflective polarizer and the substrate are fixed together, and wherein the touch panel does not create a phase difference in light. It is preferable that the substrate be a glass substrate with a thickness of greater than or equal to 0.1 mm and less than or equal to 0.4 mm.Type: ApplicationFiled: August 26, 2015Publication date: October 5, 2017Applicant: Sharp Kabushiki KaishaInventors: Masahiro HASEGAWA, Hiroyuki HAKOI, Akira SAKAI, Kiyoshi MINOURA
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Publication number: 20170285399Abstract: A liquid crystal display panel (100A, 100B) includes a transverse electric field mode liquid crystal cell (10), a first polarizing plate (22A, 22B) disposed on a back surface side of the liquid crystal cell (10), and a second polarizing plate (24A, 24B) disposed on a viewer's side of the liquid crystal cell (10). A liquid crystal layer (18) contains a nematic liquid crystal whose dielectric anisotropy is negative. The liquid crystal layer (18) has And of less than 550 nm, where ?n is the birefringent index of the nematic liquid crystal and d is the thickness of the liquid crystal layer. The liquid crystal layer (18) is in a twist alignment state when no voltage is applied. When polarized light whose Stokes parameter S3 takes on an absolute value |S3| of 1.00 enters the liquid crystal layer (18), |S3| of polarized light having perpendicularly passed through the liquid crystal layer (18) is 0.85 or greater.Type: ApplicationFiled: September 2, 2015Publication date: October 5, 2017Inventors: Kohzoh NAKAMURA, Akira SAKAI, Kiyoshi MINOURA
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Publication number: 20170262558Abstract: A non-transitory computer-readable recording medium having stored therein a program for causing a computer to execute a process for thermal conductivity calculation, the process includes receiving information indicating a surface of a first part, on which a particular part having high elasticity is disposed; receiving specification information indicating a second part in contact with the particular part; receiving information Indicating a first thickness of the particular part; calculating a second thickness of the particular part after compressed when the particular part is placed between the surface and the second part; and calculating a thermal conductivity of the compressed particular part having the second thickness, according to an amount of compression indicating a difference between the first and the second thicknesses and to a correspondence relationship between a thermal resistance of the particular part and an amount obtained by subtracting a thickness of the compressed particular part from the firType: ApplicationFiled: February 15, 2017Publication date: September 14, 2017Applicant: FUJITSU LIMITEDInventors: akihiro otsuka, Akira Ueda, Yasuhiro Ite, Takamasa Shinde, Kazuhisa Inagaki, Akira Sakai, Tetsuyuki Kubota, Hideharu Matsushita
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Publication number: 20170261808Abstract: The present invention provides a liquid crystal display device having a high transmittance and excellent visibility in a bright place. The liquid crystal display device of the present invention includes, in the given order, a backlight, a first circular polarizer, a liquid crystal panel, and a second circular polarizer. The first circular polarizer is a reflective circular polarizer including a reflective linear polarizer and a ?/4 plate disposed adjacent to the reflective linear polarizer. The liquid crystal display device satisfies (1) the liquid crystal panel is provided with color filters of two or more colors and has an aperture ratio lower than 43%, or (2) the liquid crystal panel is provided with no color filter and has an aperture ratio of 39% or lower.Type: ApplicationFiled: November 26, 2015Publication date: September 14, 2017Applicant: Sharp Kabushiki KaishaInventors: AKIRA SAKAI, HIROYUKI HAKOI, KOZO NAKAMURA, KIYOSHI MINOURA
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Patent number: 9744957Abstract: The braking device for a vehicle includes a judging portion which judges whether the input piston and the output piston are in contact with or separated from each other and a control portion which outputs the control signal to the pilot pressure generating device so that the hydraulic pressure detected by the hydraulic pressure detecting device becomes a target value corresponding to a vehicle state, when judged that the input piston is not in contact with the output piston and outputs another control signal to the pilot pressure generating device, by which the pilot pressure becomes higher than the pilot pressure generated under a same vehicle state to a vehicle state in a case that the control signal is outputted when the judging portion judges that the input piston is not in contact with the output piston, when judged that the input piston is in contact with the output piston.Type: GrantFiled: January 31, 2014Date of Patent: August 29, 2017Assignees: ADVICS CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kiyohito Takeuchi, Yosuke Yamasoe, Yoshio Masuda, Masaki Ninoyu, Kiyoyuki Uchida, Yusuke Kamiya, Masaaki Komazawa, Akira Sakai